"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult."

Some digging highlighted that attribute selectors, since jQuery 1.3 and above no longer use the @ syntax. This actually had been deprecated since version 1.1.4, but only from version 1.3 is it no longer supported.